defmodule Main do
  def input, do: IO.read(:line) |> String.trim
  def ii, do: input() |> String.to_integer
  def li, do: input() |> String.split |> Enum.map(&String.to_integer/1)
  def yn(b), do: IO.puts(if b, do: "Yes", else: "No")

  @inf 10 ** 9
  def main do
    input()
    a = li() |> Enum.sort

    dmin = for [a, b] <- Enum.chunk_every(a, 2, 1), reduce: @inf do
      d ->
        min(d, b - a)
    end

    dmax = Enum.at(a, -1) - Enum.at(a, 0)
    IO.puts dmin
    IO.puts dmax
  end
end